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technology | Fig. 5 Fig. 5: During the testing process, all relevant data of ISO 14801 are recorded in a measurement diagramme with DORA SOFT. rameters on the mechanical performance of an implant in regard to testing conditions of ISO 14801 standard.62 In their study, an endosseous dental implant was loaded under ISO standard 14801 testing conditions by numeri- cal simulation, with four parameters evaluated under the following conditions: conditions of the contact surface area between the implant and the loading tool, length of the fixation screw, implant embedding depth, and ma- terial used for implant stiffness. Finite element analysis was used to compare the force that needed to reach the implant’s yield and fracture strength. It was shown that finite element analysis made it possible to evaluate four performance parameters of a dental implant under ISO standard 14801 conditions. Under these conditions, the contact surface area was found to be the major pa- rameter influencing implant performance. Numerical methods should be considered in the pro- cess of implants design, as they can improve the perfor- mance of dental implants and their prosthetic parts under the conditions of ISO standard 14801. sensitivity as a risk factor for dental implant failure. Zirco- nium implants appear to offer the similar success rates as titanium implants. Zirconium implants have an obvious aesthetic advantage over titanium implants being “pure white”, making them indistinguishable from natural teeth. Fracture, corrosion, fatigue, the possible abrasion ac- tions that take place within the connected parts of im- plant, and other relevant terms are all important mechan- ical factors that should be taken into consideration before introducing ceramic dental implants in the market. Such mechanical features should be tested through previously defined standards or norms. To date, two separate in- ternational ISO standards are available for testing dental implants; namely ISO 13356 and ISO 14801. However, there is still a recent debate regarding these currently applicable ISO standards due to the fact that they are not addressing the in vivo aging behaviour of zirconia dental implants to verify their real pre-clinical safety. Literature Conclusion Titanium is regarded as the “gold standard” for dental implant materials due to its biocompatibility. Numerous studies have affirmed the high success and survival rates of titanium dental implants in many different applications. One disadvantage is that it can result in poor aesthetics, especially in the anterior region, because of its greyish colour and exposure of the implant body due to soft tis- sue recession or if the individual has thin gingival biotype. Moreover, some reports have considered titanium hyper- contact LARADO Medizin Prüf- & Fräs-Technik GmbH Franz-Kirsten-Straße 1 55411 Bingen am Rhein, Germany Tel.: +49 6721 309321-0 info@14801.de www.14801.de implants 1 2017 39